Rapid and low-cost method for evaluation of nutrient release from controlled-release fertilizers using electrical conductivity

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorCancellier, Eduardo Lopes-
Autor(es): dc.creatorDegryse, Fien-
Autor(es): dc.creatorSilva, Douglas Ramos Guelfi-
Autor(es): dc.creatorSilva, Rodrigo Coqui da-
Autor(es): dc.creatorMcLaughlin, Mike John-
Data de aceite: dc.date.accessioned2026-02-09T12:47:02Z-
Data de disponibilização: dc.date.available2026-02-09T12:47:02Z-
Data de envio: dc.date.issued2019-03-29-
Data de envio: dc.date.issued2019-03-29-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/33331-
Fonte completa do material: dc.identifierhttps://link.springer.com/content/pdf/10.1007%2Fs10924-018-1309-1.pdf-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1168207-
Descrição: dc.descriptionMethods to determine nutrient release rates of coated fertilizers usually rely on chemical analyses, which often are timeconsuming and/or expensive. Our goal was to develop an innovative and rapid low-cost method to evaluate nutrient release from polymer coated MAP or urea using conductometry. The release in water is determined by measuring the electric conductivity (EC) over time, with intervals dependent on release rates. In the case of soluble salt fertilizers, EC can be immediately determined and converted to a concentration using a calibration curve. In the case of urea, an additional step is needed to convert the neutral urea into ammonium. The release rates in water were assessed for a range of commercial and laboratory-coated fertilizers. A validation test demonstrated strong agreement with the release determined using analytical techniques. The EC method hence offers an easy way to quickly evaluate the time course of release of nutrients from controlled-release fertilizers.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Polymers and the Environment-
Palavras-chave: dc.subjectPolymer coated fertilizers-
Palavras-chave: dc.subjectNutrient release-
Palavras-chave: dc.subjectElectric conductivity-
Palavras-chave: dc.subjectFertilizantes revestidos com polímeros-
Palavras-chave: dc.subjectLiberação de nutrientes-
Palavras-chave: dc.subjectCondutividade elétrica-
Título: dc.titleRapid and low-cost method for evaluation of nutrient release from controlled-release fertilizers using electrical conductivity-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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